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2 years ago

Plz show steps i will give 30 points

Mathematics

1 answer:

Elden [556K]2 years ago

7 0

50-degree temperature is 0 minutes to heat = 50/0 = 50

60-degree temp. is 1 minute to heat = 60/1 = 60

70-degree temp, is 2 minutes to heat = 70/2 = 35

80-degree temp. is 3 minutes to heat = 80/3 = 26 2/3

90-degree temp. is 4 minutes to heat = 90/4 = 22.5

100 degree temp. is 5 minutes to heat = 100/5 = 20

<u>Hope this Helps :)</u>

<u></u>

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I’m confused on this

dexar [7]

$\huge\boxed{x=25}$

The mistake is in Step 1. The solver should have also squared $9$ when squaring the other side of the equation.

<h3>Correctly solving</h3>

$\begin{aligned}\sqrt{3x+6}&=9\\(\sqrt{3x+6})^2&=9^2\\3x+6&=81\\3x+6-6&=81-6\\3x&=75\\\frac{3x}{3}&=\frac{75}{3}\\x&=25\end{aligned}$

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1 year ago

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Help!!<br> f (x) =-3x+25; Find f(x)=52

melamori03 [73]

<h3>Solution for -3x+25=52 equation:</h3>

Simplifying

-3x + 25 = 52

Reorder the terms:

25 + -3x = 52

Solving

25 + -3x = 52

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-25' to each side of the equation.

25 + -25 + -3x = 52 + -25

Combine like terms: 25 + -25 = 0

0 + -3x = 52 + -25

-3x = 52 + -25

Combine like terms: 52 + -25 = 27

-3x = 27

Divide each side by '-3'.

x = -9

Simplifying

x = -9

4 0

1 year ago

HELP PLEASE I REALLY NEED IT AND CAN YOU PLEASE EXPLAIN TO ME TWO BECAUSE MY ZOOM WOSEN'T WORKING AND IT KEEPS GLICHING AND I DO

-BARSIC- [3]

Answer:

<em><u>x = 5/4</u></em>

Step-by-step explanation:

9x-7 = -3x+8 ||| that's how the equation is.

12x = 15 ||| expand and stuff

<em><u>x = 5/4</u></em> ||| Solve

8 0

3 years ago

Zach and Ginny are building model cars. Ginny's car is 2 more than 3 times the length of Zach's car. The sum of the lengths of b

Neporo4naja [7]

Answer:

$x+(3x+2)=30$

Step-by-step explanation:

Let

x ----> the length of Zach's car

y ----> the length of Ginny's car

we know that

The sum of the lengths of both cars is 30 inches

$x+y=30$ ----> equation A

Ginny's car is 2 more than 3 times the length of Zach's car

$y=3x+2$ ----> equation B

substitute equation B in equation A

$x+(3x+2)=30$

8 0

2 years ago

Pyramid A is a square pyramid with a base side length of 14 inches and a height of 6 inches. Pyramid B has a volume of 3,136 cub

leonid [27]

The Volume of PYRAMID A is 8 times greater than the Volume of PYRAMID B as obtained by taking the ratio of the volume of both pyramids.

Volume of a square based pyramid is given as :

$V = a^2h/3$

Where; h = height ; a = base edge

Hence, Volume of PYRAMID A :

$V = 14^2 * (6/3)\\\\V = 392 in^3$

Volume of PYRAMID B = 3,136 in³

Divide Volume of pyramid B by pyramid A :

$3136 in^3 / 392 in^3$

= 8 times

Expressing as a percentage, multiply by 100% ;

8 * 100% = 800%

Therefore, The volume of PYRAMID B is 800% times GREATER THAN that of PYRAMID A.

Learn more :

brainly.com/question/17615619

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2 years ago

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